Calculation of Lightning Outage Rate of High Voltage Transmission Line

Author

Geng Jianghai ; Jia Bo-yan ; Gao Shu-guo

Author_Institution

Hebei Electr. Power Res. Inst., Shijiazhuang, China

fYear

2012

fDate

27-29 March 2012

Firstpage

1

Lastpage

4

Abstract

The outage rate of high voltage power transmission lines caused by direct lighting has been analyzed and calculated, including straight lightning stroke on tower top (backstroke) and round stroke to conductor (shielding failure). Using the electrical geometry model and exposure distance, the outage rate caused by shielding failure is calculated. Based on the principles of IEEE flash program, the voltage across the insulator string and the outage rate caused by backstroke are calculated. Applying this method, the lightning outage rates of a 220kV double circuit transmission lines in Baoding, Hebei, China have been calculated. According to the calculated results the measures has been proposed which should be taken to improve the line insulation level.

Keywords

lightning protection; power transmission lines; shielding; Baoding; China; Hebei; IEEE flash program; direct lighting; double circuit transmission lines; electrical geometry model; exposure distance; high voltage power transmission lines; insulator string; lightning outage rate; line insulation level; round stroke; shielding failure; straight lightning stroke; tower top; voltage 220 kV; Grounding; Insulators; Lightning; Poles and towers; Power transmission lines; Resistance; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific

Conference_Location

Shanghai

ISSN

2157-4839

Print_ISBN

978-1-4577-0545-8

Type

conf

DOI

10.1109/APPEEC.2012.6307346

Filename

6307346